Nose blocker



FIG. 1 is a perspective view showing the front, left and upper sides of a nose blocker embodying the new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is an underneath plan view thereof. 

The ornamental design for a nose blocker, as shown and described. 